The Sweeps
Shutters Open
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Shutters Closed
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Chain wheel below fantail. |
Cranbrook Union Mill has patent sweeps with moveable shutters, operated by a chain which hangs down to the staging from the rear of the cap. When the chain wheel turns, a rack and pinion gear moves a pushrod through the hollow windshaft to operate the spider, thus opening or closing the shutters.
See the FANTAIL. Go inside the CAP. OR click on the mill diagram. Glossary of terms
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